Typewriter



P. VON BOECKMANN June 18, 1929.

TYPEWRITER Filed Nov. 22, 1923 5 Sheets-Sheet V2 TTOR/VEYS June 18,1929.

TYPEWRITER Filed Nov. 22, 1923 5 Sheets-Sheet 3 WITNESS June 18, 1929-P. voN BOECKMANN TYPEWHITER Filedv Nov. 22, 1923 5 Sheets-Sheet 4 N M MMm rt M w MOU A TTU/WE VS June 1.8, 1929.

P. voN BOEQKMANN TYPEWRITER Fiied Nov. '22

. 1925 5 Sheets-Sheet 5 Patented June 18, 1929.

UNITED STATES PAUL VON BOEGKMANN, F NEW YORK, N. Y.

TYPEWRITER.

Application filed November 22, 1923.

My invention relates to typewriters, and has foi-its objectto provide asimple and novel mechanism for automatically operating typewriters in aneilicicnt manner, and further contemplates a construction in which saidoperating mechanism is itself automatically or manually controlled atwill. 'Another object of my invention is to provide a simple and novelarrangement whereby the printing l" mechanism may be adjusted to produceimpressions of uniform intensity and predetermined cliaracteristics, andwhereby the impacting force of the type bars may be varied to accordwith the physical characteristics of the type and thereby 'produceuniform impressions. Other more specific objects of my invention willappear from the description hereinafter and the features of novelty willbe pointed out in the appended claims.

In the accompanying drawings, which illustrate an example of theinvention without defining its limits, Fig. 1 is a side eleva tion; Fig.2 is a sectional elevation; Fig. 3 is a fragmentary plan view of thecarriage; Fig. 4 is a detail view of a tripping mechanism effective to-stop the carriage return; Fig. 5 a fragmentary side elevation lookingin the opposite direction from Fig. 1; Fig. 6 is a detail section on theline 6-6 of Fig. 5; Fig. 7 is a detail view of the means for controllingthe sheet operating mechanism;

Fig. 8 is a diagrammatic View of the tabu# lating control; Figs. 9, 10,11 and 12 are de- `tail views illustrating circuit makers and breakersforming part of the mechanism;

Figs. 13, 14 and 15 are detail views illustrating the type-bar actuatingmeans in different positions; Figs. 16, and 17 are detail views showingthe arrangement of electro-magnets and armatures for controlling theoperation of the type-bars; Figs. 18 and 19 are detail views of thearmature carrying rods and Fig. 2() is a diagrammatic view of theVarious electric circuits.

In the drawings, which show the invention applied to a typewriter ofconventional form, 10 represents the frame having the customary segment11 upon which type bars 12 are pivoted, in the Well known way, for

50 cooperation with the usual platen 13; the

latter comprises part of the carriage 14 Which is arranged to travel inthe direction of its length in successive steps during thetypingoperation and to-be rotated and returned to its initial position at theend of each printed line in a manner to be fully described herein-Serial No. 676,230.

after. In the illustrated example the segment 11 is pivotally mounted,by means of links 11a upon a stationary section 11b of the machine, soas to be capable of adjustment to bring the upper and lower casecharacters into printing position at will. As shown in the drawings, thetype bars `12 are connected by means of links 15 with arms 16 pivotallymounted at 17 upon the section 11b.

Each arm 16 is operatively1 connected, b means of a link 18, with amember 19 provi ed with a slotI 20 whereby said member is mounted upon ashaft 21 so as to be capable of sliding and pivotal movements relativelythereto, as willbe more fully set forth hereinafter, said shaft beingjournalled in suitable stationary bearings. The connection of the links18 with the arms 16 and the'members 19 preferably both comprise pins andopen ended slots, so that said links 18 may be quickly and easilydetached, if for any reason this should become necessary. The members 19are so arranged that the end 23 thereof, in the operation Aof themechanism, may be adjusted into the path of a constantlyrock ing bar 24through the medium of a spring 25; the bar 24 is common to the ends 23of all of the members 19 and is carried by arms 26 mounted upon theshaft 21. A trigger rod 27 at its one end carries an armature 28 and hasits other end normally located beneath a lug .the armature 28 bears inthe normal position of the parts. A spring 33 is connected with the rod27 for restoring its armature 28 as well as associated parts, to theirnormal positions and for maintaining them therein. The armature 28 islocated in co-operative relation to the cores 34 of electromagnets 35,which form part of a compound electrical circuit to be more fullydescribed hereinafter. The spring 25 serves, in addition to its otherfunctions, previously mentioned, to exert a pull upon the member 19whereby the lug 29 thereof is maintained in engagement with the rod 27when the parts occupy their ,normal positions, the pivotal movement ofthe member 19 in one direction being arrested by a stop bar 22.

It will be understood that the members 19, rods 27 and armatures 28,correspond in number to the number of typebars 12 included in thetypewriter, and that the electromagncts 35 are of such number and soarranged as to properly co-operate with each armature 28 to produce thedesired operation; or in other words, that for each type bar 12 there isa mechanical operatin unit consisting of the parts referred to a ove andtheir cooperating elements, one complete unit being illustrated in Fig.2 and being shown in part in Figs. 13, 14, and 15. For the purpose ofattaining the greatest simplicity in the grouping of the electromagnets35 and in order to make the' same and the co-related parts readilyaccessible, the arrangement shown in Figs. 2, 16, and 17 ispreferred. Asillustrated, the magnets are grouped in a plurality of tiers arranged instaggered formation upon-a suitable supporting frame 36 which may befixedin position upon the main support in any convenient manner. In thelillustrated example the electro-magnets 35 are arranged in two tiers aand b, each tier containing two rows of magnets combined in pairs, eachpair cooperating with one of the armatures 28 as shown in Fig. 17; withthis arrangement the armatures which eo-operate with the magnets 35 ofthe tier a project upwardly from the rods 27, while those armatures 28which co-operate with the magnets 35 of the tier b extend downwardlyfrom the rods 27 which carry them. The described arrangement permitseasy inspection of the armatures and when necessary, permits anyarmature and its pulling rod to be completely removed from the machineby'simply lifting the same upwardly out ofthe slots 30 of the members 31and 32.

Any suitable means may be employed for rocking the bar 24 during anoperative period of the machine; the speed ofoperation of said bar 24being preferably at a rate which is greater than the speed at which atypewriter is manually actuated by an operator the purpose of which willappear more fully hereinafter; as shown by way of example in thedrawings, this means may comprise a shaft 37 journalled in suitablebearings and rotated in any conventional manner, as by being providedwith a pulley 38 connected by belt with an electric motor or the like.The shaft 37 carries an eccentric 39 which serves to reciprocate amember 40 which carries a pin 41 adapted to bear against an arm 42 fixedupon and depending from the shaft 21; a spring 43 has its one endconnected with said arm 42 and its other end attached to a lug 44 fixedupon the frame 10 at a suitable point. With this arrangement the arm 42is positively moved inone direction by the action of the pin 41 and inthe return direction by the spring 43 and the shaft 21 and consequentlythe bar 24 is rocked to and fro. The member 40, in the illustratedexample, is supported at its free end by means of a link 45 the one endof which is pivoted to said member 40 at 46 and the other end of whichis pivoted at 47 to a lever 48; the lat-ter is fulcrumed at 49 upon astationary part of the frame 10 and at one end is connected with aspring 50 which in turn is attached to the link 11a whereby the segment11 is mounted upon the stationary section 11". A shift actuating member51 is pivoted at 52 upon the opposite end of the lever 48 and has t itsupper end connected by means of a wire or other rigid connection 53 orthe like with a bar 54 slidably mounted in a support 55 fixed upon theframe 10. The lower end of the member 51 is formed with a hook 56 whichextends about the shaft 37 and is adapted to be shifted into and out ofcooperative relation with a cam 57 carried thereby as shown in Figs. 5and 6. The aforesaid shifting of the hook 56 is accomplished by means ofan armature 58 carried by the bar 54 and adapted to co-operate with apair of electro-magnets 59 located upon the support 55 as shown in Fig.6. A spring 60 surrounds the bar 54 and bears with one end against thesupport 55 and with its other end against a collar 61 on the bar 54 andby its action on said bar serves to maintain the armature 58 normally ata distance from the electro-magnets 59 and the hook 56 of the member 51out of the path of the cam 57 as shown in Fig. 2. In Fig. 6 the partsmentioned above are shown in a position in which the hook 56 is in thepath of said cam 57 so as to be operated thereby in the manner to bemore fully set forth further on in the description.

During the operation of the type-keys in the manner to be more fully setforth hereinafter, the carriage 14 is advanced in steps by the customarycarriage feed mechanism in the well known way until the end of a line isreached. To continue the writing, when this point has been reached, itis necessary to return the carriage 14 toits initial position and torotate the platen 13 a distance corresponding to the line spacing of thematter being written. The mechanism whereby this return of the carriageand line spacing is brought about is shown, by way of example, in Fig. 1of the drawings. As illustrated this mechanism comprises a pinion 62securedupon the shaft 37 and meshing with a gear 63 carried by acounter-shaft 64 journallm in bearings 65 fixed upon the frame 10. Adrum 66 is loosely mounted upon the countershaft 64 and is connectedwith a flexible band or tape 67 which passes over a pulley 68 on theframe 10, the freeend of said band 67- being attached to a springcontrolled bellerank lever 69 pivoted at 70 upon the carriage 14; thelever 69 in turn is connected hy means of a link 7l, as shown in Fig. 3,with the pawl 72 which co-operates with the ratchet 73 to rotate theplaten 13 periodically for line spacing the matter being written. Aclutch 75 is fixed upon the shaft 64 and is provided with pads or thelike 75a arranged to co- 14 carried by the bar 14a operate with the drumv66 andcouplc it to the shaft 64 at `the proper time. The drum 66 isfurther provided with a hub 76 against `which the forked end 77 of abell-crank level' 78 bears as shown in Fig. 1, the return movement ofsaid forked end 77 being arrested at shown in Figs. 1 and 4;- thecontacts 14c and 14d are. in electrical circuitwith the electromagnets81 and comprise part of a means' whereby' the carriage return isarrested at a point and in a manner to prevent injury to the machine. Asshown in Fig. 4 the carriage 14 is provided with a cam-member 14arranged to exert alifting action on a lug and thereby separate thecontacts 14c and 14d.; it willbe understood that the latter and thecam-member 14e and lug 14 are so locatedwith respect to each other thatthe described separation of the contacts 14c and 14d will take placetoward the finish of the retrn movement of said carriage. f j

Upon the counter-shaft 64 is looSely mounted a circuit maker and breaker82 provided at one end with a clutch-disk S25-having spaced projections84, 84a and 84b extending radially outward from itsperiphery asillustrated in Fig. 9. The disk 83 is arranged for co-operation with alatch 85 which includes two spaced lugs 86 and 87 located in off-setrelation with respect to each other and adapted to alternately andsuccessively engage the projections 84, 84a and 84 of said disk fornormally maintaining the circuit maker and breaker 82 against rotation.The

latch 85 is in the form of a bell-crank lever pivoted at 88 and stoppedin one direction by a pin 88a and carries an armature 89 arranged forco-operation with electro-magnets 90 located .upon the frame 10; whenelectrically engaged asV will appear more fully hereinafter, theelectro-magnets 90, by attracting the armature .89, swing the latch 85'to an inoperative position in which the lug 86 is moved out ofengagement for instance with the projection 84 and the lug 87 is movedinto the path of the next succeeding projection 84a. In this position ofthe parts the disk 88 and circuit maker and breaker 82 are free torotate and are coupled to the counter-shaft 64 by means of aco-operating clutch-disk 91 preferably faced with felt or other frictionmaterial 92 as shown in Figs. 1 and 10, the rotation of the disk 83 andthe circuit maker and breaker 82 being finally stopped when theprojection 84 engages the lug87. lVhen the electromagnet 90 isdeenergized, the armature 89 will drop and thereby swing the lug 87 outof engagement with the projection 84a and at the same time adjust thelug 86 into the path thereof; asa result ofthis, the circuit maker andVbreaker 82 again rotates until stopped by engagement of the projection84HL with the lugf86. From the above it will be clear that theenergizing and deenergizing 'of thev electromagnets 90 causes anoscillation of the latch l85 which, by shifting-the lugs 86 and 87 intoand out of the vpaths ofthe projections 84, 84a, and 84b brings about anintermittent rotative movement of the'circ'uitmaker andbreaker 82 wherebelectrical arcing and sparking is prevente In order to maintain thecircuitmaker and breaker 82 against lengthwise movement on thecounter-shaft 64 and to insure an efficient frictional engagementbetween the disks .83

and 91 at the proper time a coil spring 82 may be provided upon theshaft 64. This spring bears with one end against the circuit maker andbreaker 82 and with its other end against a fixed element on the shaft64 and exerts a tension tending to force the disk 88 toward the disk-91. The circuit maker and breaker 82 co-operates with switch-tongues 93fixed upon the frame 10 as illustrated in Fig.v 10, said circuit makerand breaker 82 and -switch-tongues 93 being in electrical circuit withthe electro-magnets 35 and constituting a controlling means wherebyinterference with the intended actuation 'of the mechanism, particularlywhen manually operated, is prevented.

.The counter-shaft 64 urtler carries a circuit-breaker and maker 94mounted to rotate with said counter-shaft 64 and tio-operating withlapair of switch-tongues 95 fixed upon the frame as shown in Figs. 1, 10,and 12; in addition to its other functions, the circuit- 'maker andbreaker may constitute the fixed element against which the spring 82abears as shown in Fig. 1. The circuit-maker and Y breaker 94 and thetongues 95 are in electrical circ-uit with the electro-magnetst') andserve to prevent electrical arcing or sparking during automaticoperation of the machine, in the manner to be more fullydescribedhereinafter.

The operationof the mechanism/so far described is as follows, it beingassumed that the shaft 37 is beingcontinuously operated to rotate theeccentric) and thus reciprocate the melnber 40; the latter through themedium of the pin 41 and the co-operation of the spring 43 causes thearm 42 to be oseillated and thus rocks the shaft 21. This causes thearms 26 to be oscillated and consequently brings about a horizontalreciprocation of the bar 24, the speed of operation being preferably inexcess of the speed at which a typewriter, generally speaking, ismanually operated. Under such conditions, if .the electro-magnets 35 areelectrically energized, t e co-operating armature 28 will be attractedby the coresv 34 and will accordingly exert a pull upon the rod 27whereby its free end is withdrawn from beneath the lug 29 of the member19 which is thus relieved from restraint; As soon as this happens, themember 19, by the action of the spring 25, is drawn downwardly in Fig.2; if this downward movement of the member 19 occurs at a time when thebar 24 is anywhere between the extremes of its range of operation eitherduring a forward or a backward niovement, the end 23 of the member 19will be drawn into surface engagement vwith said bar 24. The latter incontinuing its operation will simply ride along said end 23 until it,the bar 24,freaches a. position rearwardly or behind the member 19whereupon the latter is shifted to a position in which its end 23 is inthe path of the reciprocating bar 24 as shown in Fig. 14. In thiscondition, the first time the latter, in continuing its reciprocations,describes a forward movement, it will exert a forward pressure upon saidend 23 whereby said member 19 is pivotallyv moved about the shaft 21 ina forward direction. Because of the fact that at this stage, the bar 24and member 19 both move forwardly about the same centre, or in otherwords both have the shaft 21 as a pivot, there will be no relativesurface movement or rubbing between the edge of the bar 24 and the end23 of the member 19; as a result of this arrangement, friction betweengthese elements is leliminated and wear and tear upon the same is reducedto a minimum.-

The described actuation of said member 19 exerts a forward pull upon thelink 18 and pivotally rocks the lever 16 on its pivot 17 and through themedium of the link 15, operates the type bar inthe conventional manner.As the member 19 is brought to its extreme forward position shown rinFig. 15, the lug 29 thereof will be located at a point above thecooperating rod 27; because ofthe fact that at this stage, theelectro-magnets 35 are de-enerl gized, the restraint upon the armature28 will be relieved and the particular rod 27 will be returned to itsinitial position and reset by the action of the spring 33; as the bar 24and member 19 now move rearwardly, the member 19 will describe a pivotalrearward movement which has for its pivot the point of engagementbetweensaid lug 29 and the bar 27 and which member 19 is raised relatively tothe shaft 21 and its end 23 consequently is withdrawn from the path ofthe bar 24. This operation is duplicated cach time the electromagnet 35,or any of them are energized and brings about a systematic operation ofthe typewriter, which is entirely automatic in its action. v

During the writing with lower case characters, the hook 56 of theshift-actuating member 51 is out of the path of the cam 57 yon the shaft37 and consequently vis not afthus attract the armature 58 as shown inFig. 6. rlhis compresses the spring 60 and slidably -moves the bar 54toward the right in Fig. 6 andaccordingly produces a pull in .thisdirection upon the wire 53 this pull is transmitted to theshift-actuating member 51 and pivotally actuates-the same'in a manner toswing the hook 56 into the path of sald cam 57 as illustrated in Fig. 6.As the cam 57 now rotates theshift-actuating member 51 will be drawndownwardly thereby and will rock the lever 48 upon its pivot 49 in amanv ner tocause it to exert a lifting action upon the spring 50 andlinks 11a whereby the segment 11 is raised to a position in which theupper case characters are in the printing position. This rocking of thelever 48 will also lift the link 45 and consequently will shift the pin41 along the arm 42 to 'a position nearer to the shaft 21; the point atwhich the pushing force of the member 40 is applied t-o the arm 42 beingthuscloser to the pivot thereof and the extent of pushing movement ofsaid member 40 being unchanged, the pivotal swing of the arm 42 willbeincreased with the result that the upper case characters of thetype-bars 12 will be brought into-contact with the platen 13 o1' thepaper thereon with greater force than the lower ease characters. lViththis arrangement, the difference in impacting force which is re uiredbetween the upper and lower case vciiaracters to produce uniformimpressions thereof, is automatically taken care of. As soon as theprinting of the upper case characters is to cease, the electro-magnets59 are de-energized and the parts, shown in Figs. 5 and 6, are restoredto their normal positions, in which the hook 56 is again out of registrywith the cam 57.

During the operation of the type-bars 12, the carriage 14 is fed alongin steps by means of the customary escapement mechanism and graduallyunwinds the band 67 from the drum 66 which at this stage is capable ofmoving independently of the counter-shaft 64; this continues until theend of the line of typewriting is reached whereupon the electro-magnets81 are energized and consequently attract the armature 80. This causesthe bell-crank lever 78 to be pivotallyy swung in a direction to forcethe drum 66 into frictional engagement with the pads 75EL located uponthe clutch member 75. In this`way theldrum 66 is coupled to thecounter-shaft 64 and is accordingly rotated thereby in a direction towind up the band 67 and exert a pull thereon; as the pull is appliedl tosaid band it is first transmitted to the bell-crank lever 69 `and causes the same to actuate the pawl 72 and thus rotate the platen 13 adistance corresponding to one line space. When this has been done, thecontinued pull upon the band 67, having moved the parts 69, 71 and 72 asfar as they can be moved in this direction, will be transmitted to thecarriage and consequently will pull the same back to its initialposition. At a point near the end of theI return movement of thecarriage the cam member 14e will engage and lift the lug 14t Whereby thecontact 14c is disengaged from the contact. 14d and the electricalcircuit in which the electro-magnets 81 are located thus broken. As soonas this occurs, the armature 80 will be permitted to drop whereby thebellcrank lever 78 will be swung in a manner to disengage the drum 66from frictional engagement with the pads 75a of the clutch member 75.The latter being in this way uncoupled from the shaft 64, the pull uponthe band 67 will cease and the carriage 14 will come to an easy stop.The purpose of the arrangement described above is to preventv thecarriage 14 from being drawn into violent engagement with other parts ofthe machine, at the end of its return movement, and to obviate thepossibility of injury to the mechanism, it being understood that theelements 14C, 14d, 14e, and 14t are so located as to bring this about.

The typewriter may be manually controlled for the purpose of writingspecial matter such as names and addresses or the like and automaticallycontrolled for other purposes such as writing duplicates of a givenletter, in t-he following novel Ways: In the illustrated example, theautomatic means consists of a metal drum 96 ournalled in suitablebearings 97 on the fralne 10 and over which ay sheet 98 in the form of aband is adapt-ed to travel, said sheet 98 being provided Withperforations 99 located in predetermined arrangement for predeterminedpurposes, as will appear more fully hereinafter. Contact rods 100,corresponding in number to the number of type-bars 12 and each bearingan operative relation to one of said type-bars, are carried by andinsulated from a support 101 mounted upon the frame 10. said contactrods 100 being provided with points 102 which bear upon the sheet 98 andare adapted to pass through the perforations 99 into contact with thedrum 96, to control the electric circuit in which t-he electro-magnets35 are located and thereby bring about an automatic operation o f thetype-bars 12 in the manner previously' set forth. As showndiagrammatically in Fig. 20, the electric circuit referred to compriseswires a-a extending from the contact rod 100 to one pole of theelectro-magnets 35, the other pole of which is connected by means ofwires a? a3 with one of the switch-tongues 93 of the circuit maker andbreaker 82 5 the other switchtongue 93 of said circuit maker and breakeris connected by means of wires at a5 with a wire A which leads to onepole of a generator B. A Wire A leads from the other pole of saidgenerator B to the drum 96 and completes the circuit; the generator Bmay be driven by means of an electric motor 145 as shown in Fig. 20. Themechanism whereby the drum 96 is operated, may, as shown, comprise a.pair of aligning vertical shafts 103 and 104 journalled in bearing 105upon the frame 10 as shown in Fig. 1. The shaft 103 is operativelyconnected with the countershaft 64`byl bevel gears 106 and 107 and theshaft 104 is provided at its upper end with a worm gear 108 in mesh witha worm pinion 109 connected with the drum 96 as illustrated in Fig. 1. Aclutch-sleeve 110 is permanently and slidably connected with the shaft104 by means of a slot 111 and pin 112 and slidably lits over the shaft103 with which it is detachably connected by means of a recess 113 and avpin 114, the clutch-sleeve 110 comprising a means whereby the shafts103 and 104 may be connected and disconnected to control the operationof the drum 96. As shown in Fig. 2 the normal position of theclutch-sleeve 110 is such that the shafts 113 and 114 are connected andaccordingly operate as a single shaft.

The purpose of the clutch-sleeve 110 is to permit the shaft 104 to bedisconnected from the shaft 104 in order to arrest the operation of thedrum 96 when for any reason this should be desired as for instanceduring the manual control' of the typewriter for the purpose of writingspecial matter such as names and addresses and the like.

To effect an automatic disconnection of the shaft 104 from the shaft 103at the time when the operation of the drum 96 is to be tem- '116 pivotedat 117 in a suitable manner upon the frame 10 as illustrated in Fig. 7.As this lever 116 is pivotally actuated, the'clutch sleeve will bemanipulated in a manner to connect and disconnect the shafts 113 and 114as required. In the illustrated example the lever is electricallycontrolled and is provided with an armature 118 located in co-operativerelation to one or more electro-magnets 119 mounted upon the frame 10 asshown in Figs. 1 and 7. These electro-magnets 119 are in electriccircuit with a contact rod 100 mounted upon the support 101 and having apoint 102a adapted to drop through perforations 99a of the sheet 98; theperforations 99 are soarranged upon the sheet 98 as to bring about anelectrical energizing of the magnets 119 at the predetermined timesWhere a discontinuance ofthe operation of the drum 96 is desired. Thatis to say, as the point 102a drops through one of the perforations 99ainto contact with the drum 96 and thereby completes the aforesaidelectric circuit whereby the electro-magnets 119 are energized, the ar-vmature 118 will be attracted and will pivotally lift the lever 116 andraise the clutch-sleeve 110. This will disengage the recess 113 from thepin 114 and disconnect the shaft 104 from the shaft 103 and thus arrest,temporarily, the operation of the drum 96. The circuit reerred tocomprises a wire b which leads from the contact rod 100a to one pole otthe electromagnets 119, a similar wire b leading from the other pole toa contact b2 normally in engagement with a co-operating contact bawhich, in turn, is connected by means of a wire bt with a wire b5. Thelatter is connected vwith a contact 66 mounted upon the frame 10 thedrum 96 and,I completes the circuit.

lin order that the disconnection of the shafts 103 and 104 may bemaintained tor a given period ot time without requiring theelectro-magnets 119 to be continuously encrgized throughout said period,it is desirable to lock the-lever 116 in its raised position in such amanner that it may be readily released as soon as the connection of theshaft 104 with the shaft 103 is again desired. For this purpose theillustrated example of the invention includes a latchlor locking member120 slidabl mounted in a support 121 located upon t e frame 10 inoperative relation to the lever 116 as shown in Fig. 1; a spring 122serves to press the locking member toward the lever 116, which, as shownin Fig. 1, is provided with a-depending lug 123 against which saidlocking member abuts in the normal position of the lever 116. The member120 carries an armature 124 arranged, in operative relation to a pair ofelectro-magnets 125 xed upon the support 121 and which constitute a part4of the means whereby the locking member 120 is actuated to release thelever 116 and restore the connection between the shafts 103 and 104. 1

The electro-magnets 125 are in electric circuit with a key-lever C whichcarries the contact b3 and-serves to disengage the same from the contactb2 and thereby break the circuit in which the electro-magnets 119 arelocated. rlhat is to say, a wire c extends from one pole of theelectro-magnets 125 to the key C which carries a contact c adaptd toco-operate with a contact c2; the latter is connected by means of a wire03 with'a main wire A2 which connects with the wire A leading to oneside of the generator B. The wire A which leads vfrom the other side ofthe -generator B is connected with a wire c4 which leads to theotherpole of the electro-magnets 125 and completes the circuit.

From the foregoing it will be understood that as soon as the electriccurrent through minero the electro-magnets 119 is completed, in themanner set forth, the lever 116 will be lifted to discontinue the shafts103 and 104 and will immediately be locked inl this position by thelocking member 120 and at the same time will at once arrest furthermovement of the drum 96 and sheet 98; that is as soon as the dependinglug 123 rises above the member 120, the latter will be forced beneaththe same by the action of the spring 122, whereby the lever 116 as wellas the clutch-sleeve 110 will be held in the raised position. At thesame time the described lifting of the lever 116 `will. raise thecontact b? away from the contact L and thus break the electric circuitwhereby the electro-magnets 119 are Aenergized and thus prevent thepoint 102a from being burned.

During this period, that is while the shafts 103 and 104 aredisconnected, the typewriter may be manually actuated for instance by abank of master keys, to write special matter such as names, addressesand the like. The bank of keys referred to is diagrammaticallyrepresented by the key D in Fig. 20; as there shown this key D iselectrically connected by means of a wire d with the wire a and thuswith one pole of the electro-'magnets 35 and thereby becomes a part ofthe circuit a2, a3,

a4, a5, A which leads from said generator. The wire A2 isfconnected witha contact d which is arranged for co-operation with a contact Z2 mountedupon the key D; the lat. ter is further provided With a second contactZ3 adapted to engage a contact Z4 as shown in Fi 20. The contact (Z3 isconnected by means oy a wire Z5 with one side of the electro-magnets,from the other side of which a wire Z6 leads to the wire A' which, aspreviously stated, is connected with the generator B; the other contactZ4 is connected by means of a wire Z7 with the wire A which also leadsto the generator B and completes the circuit in Which the key D and theelectromagnets are located.

With this arrangement as the key D is depressed the contact Z2 willengage the contact y d and thereby close the circuit through the key,the wires Zand a', the electro-magnets 35, wires a2 and a3, circuitmaker and breaker 82, wiresa, a5, andA, the generator B and the Wires Aand A2. At the same time, the contact Z3 will be brought into engagement'with the contact Zi and Will thereby close the circuit through the wired5, the electromagnets 90, thewires ZG and A', the generator B and thewire A and (Z7. This causes an elcotrical energization of the coils 35and 90 and brings about an operation of the type-bars 12 in the mannerypreviously described. It will be understood that all of the master keysD are similarly connected and when operated produce the same actuationot the cooperating type-bars 12.

When the special matter being written by the manipulation of the keys Dhas been completed and automatic operation of the typewriter is againdesired, the key C is depressed', which brings'about a separation of thecontacts b2 and b3. This breaks the circuit b', coils 119, Wire b,contact bar 100, point 102, drum 96, wire A generator B, wires A, a5,bs, contacts 67, b, wires b5 and b, and obviates the possibility of anyunintentional energization of the electro-ma nets 119. Coincidentallywith the separation of the contacts b2 and b3, the contacts c2 and c3are brought into engagement with each other and thus close the circuitcomprisin the wire c, the coils 125, the wires c* and generator B andthe wires A', A2 and es. This resultsin an electrical energization ofthe electro-magnets 125 and causes the armature 124 to be attracted andto shift the locking-member 120 in a direction to release the lever 116.The latter by gravity or with the assistance of a spring 116 drops toits initial position and restores the clutch-sleeve 110 to a position inwhich the recess 113 again engages thepin 113 and thus again connectsthe shafts 103 and 104. At the same time the contacts 1) and 117 arealso returned into engagement with each other so that as soon as the keyC is released and the contacts b3 and b2 are thereby again engaged, thecircuit in which the electromagnets 119 are located will be restored toits initial condition.

For the purpose of 'automatically energizing the electro-magnets 59 tobring about an automatic shifting of the mechanism for upper casewriting a contact-bar 100b is pro-v vided on the support 101 and has itspoint 102b arranged to drop through apertures 99b of the sheet 98 intocontact with the drum 96 to complete an electric circuit whereby thecoils 59 are energized each timean upper case character is to bewritten. The circuit referred to comprises a wire e leading from the bar100b and connected with a Wire e which leads to one pole of theelectro-magnets 59;

the other pole of the latter is connected by means of a wire c2 with theWire A which leads to one side ofthe generator B. The said circuit iscompleted by the wire A which connects the other side of the generator Bwith the drum 96. Thus each time an aperture 99b comes into registrywith the point 102b the aforesaid circuit Will be closed andtheelectro-magnets 59 will be energized and consequently will attract thearmature 68; this will bring about an operation of the shift-actuatingmember 51 and of the co-operating elements to raise the segment 11 forupper case printing in the manner previously set forth. In order topermit this shifting of the segment 11 for writing upper case characterswhen the typewriter is being manually controlled by means of the masterkeys D, the circuit referred to includes a Wire e3 which leads to ashift key E as shown in Fig. 20.

the main wire A2.

The key referred to is provided with a contact e4 arranged forco-operation with a similar contact e5 which is connected by means of aWire e6 with the wire A2.

With this arrangement, as the key E is depressed, the contactv e* willbe brought into engagement with the contact e5 and will accordinglyclose the circuit through the wires e, A2 and A', the generator B, theWires A and c2, the coils 59, the wire e and the wire e3 back to the kef The electro-magnets 59 will according y be energized and will bringabout an operation of the shifting mechanism in the same way aspreviously described.

In order to automatically operate the mech- `anism referred tohereinbefore whereby the platen 13 is rotated and the carriage 14 isreturned to begin a new line, the sheet 98 is provided with apertures 99located thereon at the proper points and arranged to move into registrywith the point 102 of a contact-bar 100 iXed upon the support 101. Thebar 100 is connected by means of wires f and f with the contact 14located upon the carriage 14 and the co-operating Contact 14d'which isfixed upon the frame 10 is connected by means of a wire f2 with one sideof the coils 81; the other side of said coils 81 is connected by meansof a wire f3 with the wire A which leads to the generator B, theparticular circuit bei ing completed by the Wire A leading from thegenerator B back to the drum 96.

Thus as an aperture 99 cornes into registry with thepoint 102c and`permits the latter to drop into Contact with the drum 96 the circuitwill be completed through the wires f and f, the coils 81, the wires f3,and A, the generator B, the wire A and the drum 96. This causes anelectricalenergization of the electro-magnets 8l `which accordinglyattract the armature 80 and shift the drum 66 into engagement with theclutch 7 5 and thereby bring about a rotation of the platen 18 and areturn of the carriage in the manner previously set forth. As thecarriagenears the end of its return movement, the cam 14 will engage andlift the lug 14t and the bar 14 and thus Will raise the contact 14 awayfrom the contact 14d and break the aforesaid circuit; as previouslystated the return movement of said carriage is thus arrested at a pointand in a manner to prevent injury to the parts.

For the purpose of bringing about the described rotation of the platenand return of the carriage when the typewriter is under themanual-control of the keys D, a wire f leads from the wires f, f to acontrol key F which is provided with a contact The latter is arrangedfor co-operation with a contact f which is connected by means of a wiref7 with As the key F is depressed the Contact f5 will be brought intoengagement with the contact f and will close the circuit through thewires f7, A2 and A', the generator B, the wires A and f3, the coils 81,the

wire f2, the contacts 14d and 14", the wires f and ft back to the key F.The electro-magnets 81 will thus be operated in the same way aspreviously described to actuate the parts and to rotate the platen andreturn the carriage, the circuit being broken automatically by theseparation of the contacts 14c and 14d in a corresponding manner.

1n addition to the elements so far described, provisions are made fortabulating when this is required. 1n the illustrated example the.

tabulating means comprises a pair of electromagnet-s 126 carried'by asupport 127 mounted upon the frame 10 for instance as shown in Fig. 2.An armature 127 is located in operative relation to said electro-magnets126 and is carried by a lever 128 pivoted at 129 upon the frame 10; aspring 130, indicated in Fig. 8, may be provided for shifting the lever128 in a direction to move the armature 127d away from the coils 126.The lever 128'is connected, by means 'of a link 131, with a member 132,the lower end 133 of which is hook-shaped and arranged to be shiftedinto and out of the path of a cam 134 mounted upon the shaft 37; asshown in F ig. 8 the arrangement is similar in construction andoperation to the means shown in Figs.` 5 and 6 whereby the segment 11 isshifted for upper case Writing. The member 132 is pivotally connectedwith and depends from one end of a rocking lever 135 pivoted at 136 uponthe frame 10 as illustrated diagrammatically in Fig. 8; the other end ofsaid rocking lever 135 engages one arm of a bell-crank lever 137 pivotedat 138 upon the frame 10 of the machine. The other arm of saidbell-cranklever 137 is connected by means of a link 139 with an arm 140 xed upon ashaft 141; the latter is suitably journalled upon the frame 10 andcarries a member 142 which is pivotally attached to the customaryescapement rack 143, and supports one end portion thereof. A similarmember 144 pivotally mounted upon the frame 10 supports the otherendportion of said rack14-3 as shown in Fig. 8.

The tabulating means is automatically con- .trolled by the sheet 96which Vincludes apertures 99drarranged to move into registry with thepoint 102d of a contact-bar 10()d carried by the support 101. The bar100d is connected by means of wires, g and g', with one pole of theelectro-magnets 126, from the other pole of which a wire g2 leads to thewire A. Thus when the point 1021 drops through one of the apertures-99dint-o engagement with the drum 96, an electric circuit will be completedthrough the bar 1, the wires g and g', the coils 126, the wires g2 andA, the electric generator B and the wire A back to the drum 196. Thiswill energize the electro-magnets 126 which accordingly will attract thearmature 127 and'adjust the lever 128 and its associated parts into thepositions shown in Fig. 8; this brings the hooked end 133 of the mem-.ber 132 into the path of the cam 134. As the latter is rotatablyactuated a pull will be eX- erted upon the member 132 and transmitted tothe rocking lever 135; the latter will, in this way, be rocked and inturn will rock the bell-crank lever 137 in a direction to lift the rackbar 143 clear of the escapement mechanism and thus permit the carriageto advance to the rst tabulating stop, which, it will be understood isof the customary type and set in the conventional manner. As soon as thecircuit is broken, by the passage of the particular aperture 99d beyondthe point 1021, the lever 128 will be swung by the action of the spring130, in a direction to move the armature 127 away from the coils 126 andto restore the associated elements to their initial positions.

For the purpose of permitting tabulation when the typewriter is manuallycontrolled by the keys D, a tabulator key G is provided which isconnected by means of a wire g3 with the wires g and g and thus with onepole of the electro-magnets 126; the key G carries a contact g"tarranged to engage a contact g5 which itself is connected by means of awire g with the main wire A2 and thus by way of the generator B and thewires A and g2 with the other pole of the electro-magnets 126. When thekey G is depressed the contact g4 is brought into engagement with thecontact i g5 and the aforesaid circuit is accordingly closed; theelectro-magnets 126 are thus energized and bring about an operation ofthe parts to release the rack 143 from the escapement as before.

The circuit maker and breaker 94, as previously stated is in electricalcircuit, with the electro-magnets 35 to prevent electrical .arcing andsparking for instance at contacts b and 127; that is one switch-tongue95 is con vnected by means of a wire h with the wires a2 and a3 whilethe other tongue 95 is connected by means of a wire k2 with the wires b4and b5 as shown in Fig. 20. l The electrical generator B, in theillustrated example, may be operated by an electric motor 145 ofconventional type or in any other suitable manner. f

From the foregoing description it will be apparent that as the drum 96is rotatably actuated to cause the sheet 98 to travel in the directionofits length, each time a perfora-l tion 99 is brought into registr'yfwitha point 102 of a contact-bar 100, that particular-point will dropthrough said perforation into contact with the drum 96 and thus willcomplete an electrical circuit including one set of the electro-magnets35. The latter will consequently be energized and will accordingly bringabout an operation of a type bar 12 of the typewriter in the mannerpreviously set forth. Thus, by simply arranging the "contact-bars 100 tocorrespond with the typebars of the typewriter and by perforating thesheet 96 accordingly, the latter provides an courate and eicientcontrolling medium whereby the typewriter is automaticall operated towritcl letters or any other prc etermined subject-matter. Assoon aslthepoint 102 of a given contact-bar 100 passes out of a perforation 99, dueto the forward travel of the sheet 98, that particular circuit is brokenand the co-operating set of electromagnets 35 accordingly de-energized,with the result that the particular type-bar and associated parts,controlled by said magnet, Will return to their normal positions. Thepreviously mentioned circuit maker and breaker 82 serves to preventelectric arcing and sparking between the points of the contact arms andthe drum 96, the arrangement being such that, as the contact pointsenter and leave the perforations of the sheet 98, the electricalcircuits in which the contact bars are located will be temporarily open.In other words, the electrical circuits are closed only as the pointstraverse intermediate portions of the sheet perforations and are brokenas the points enter and leave said perforations.

Manual control of the electro-ma nets 35 to bring about a manualoperation o the typewriter may as previously set forth be eii'ected bymeans of the keys D which in such case control the previously mentionedvelectric circuit and the electro-magnets 35 included therein; it willbe understood that suitable provision is made, as by means of springs,for restoring the keys D to their normal positions.

Shifting of the segment for upper case printing, rotation of the platenfor line spacing and return of the carriage for beginnin a new line, andadjustment of the carriage 0r tabulating work may likewise beautomatically accomplished by means of the perforations of the sheet 98;at the same time manual control may be effected through the medium ofcontrol keys E, F, and G respectively and in the manner previouslydescribed. This manual operation maybe accomplishedy regardless of theposition of the sheet 98 with respect to the contact-bars 10() etc., itbeing obvious, however, that the sheet or, in other words, the automaticcontrol is not in operation during the manual actuation set forth.

The various perforations 99, 99", 99", and 99, which controlrespectively the type-bars, the drum actuating mechanism, the segmentshifting for upper case writing, the carriage return and the tabulating-means are of suitable dimensions to bring about the desired results.

The automatic mechanism shown and described'provides a simple andetlicient means for automatically operating and controlling a typewriterby means of `a perforated travelling sheet which-may be perforated inaccordance' with any predetermined typeof epistle or the like. Themechanism may be utilized with advantage for many purposes, as forinstance for writing duplicate letters and other do'cuments.

Various modifications may be made within the scope of the. claimswithout departing from the nature of my invention.

I claim l. The combination of a typewriter including a series of typebars, a constantly reciprocating device, actuating members connectedwith said type bars and normally disconnected from said device, a seriesof electro-magnets, mechanism controlled by said electromagnets forselectively coupling and uncoupling said actuating members with and fromsaid reciprocating device7 a travelling control device and meahsresponsive thereto for controlling, in a predetermined manner, thecircuits in which said electro-magnets are located.

2. The combination of a typewriter including a series of type bars, aconstantly reciprocating device, actuating members connected with saidtype bars and normally disconnected from said device, a series ofelectro-magnets, tripping mechanism controlled by said electro-magnetsfor selectively coupling and uncoupling said actuating members with andfrom said reciprocating device, a travelling control device, means forautomatically stopping said travelling device at a predeterminedposition, and means responsive to the control of the travelling devicefor controlling in a predetermined manner the circuits in which saidelectro-magnets are situated and for controlling the means forautomatically stopping the travelling device at its predeterminedstopping position.

3. The combination of a typewriter including a series of type bars andtype bar operators, a constantly moving actuator, an electricallyactuated tripping device including an electro-magnet in operativerelation with each type bar operator for selectively coupling anduncoupling said type bar operators with and from said actuator, atravelling control device, means responsive thereto for controlling in apredetermined manner the operation of said electrically actuatedtripping device, a series of contact keys for selectively controllingthe circuits in which said electro-magnets are located, and means forautomatically stopping lthe travelling device at predeterminedpositions.

4. The combination of a typewriter including a series of type bars, aconstantly reciprocating device, actuating members connected with saidtype bars and normall disconnected from said device, a series oelectromagnets, mechanism controlled by said electro-magnets forselectively coupling and unin a predetermined manner, and a series ofContact keys for selectively causing the closing and opening of thecircuits in which said electro-magnets are located.

5. The combination of a typewriter including type bars and type baroperators, a constantly reciprocating actuator, electro-magnets,mechanism actuated by said electromagnets for selectively coupling anduncoupling said type bar operators with and from said actuator, atravelling control device, means responsive thereto for controlling in apredetermined manner the operation of said mechanism, a series ofcontact ke"s for selectively controlling the circuits in which saidelectro-magnets are located, a circuit-making and breaking device, andmeans for maintaining open the circuit in which said circuit breaker islocated, at the time when said travelling device is not in motion.

6. The combination of a typewriter includ-` ing type bar operators, aconstantly moving actuator, electrically actuated devices including anelectro-magnet in operative relation to each type bar operator forselectively coupling and uncoupling said type bar operators with andfrom said actuator, a travelling control device, and means responsivethereto for controlling in a predetermined manner the operation of saidelectrically operated devices, a series of contact keys for selectivelyclosing and opening the electrical circuits in which said electricallyactuated devices are located, means whereby said travelling device isstopped automatically at predetermined positions and means for limitingsaid coupling and uncoupling to one cycle for each cycle of closing andopening of the circuits in which said electro-magnets are located.

,7. The combination of a typewriter including a series of type bars andtype bar operators, a constantly moving actuator, electrically actuateddevices including a series of electro-magnets for selectively couplingand uncoupling said actuator with and from said operators, a travellingcontrol device, and means responsive thereto for controlling, in apredetermined manner, the operation of said 'electrically actuateddevices, afseries otkeys capable of being depressed for controlling thecircuits in which said electro-magnets are located and means wherebysaid coupling and uneoupling is limited to permit one character only`tobe printed with each depression of one of said keys. v

8. The combination of a typewriter including a type-bar action, aconstantly reciprocating pivoted bar, a pivotally movable memberconnected with said type-bar action. a device whereby said member isnormally maintained out of the path of said bar, and means for actuatingsaid device in a manner to permit said member to move into the path ofsaid bar whereby said type-bar action is operated thereby; said bar andmember, during the period of their engagement, having pivotal movementsabout a common pivot whereby relative rubbing movements between said barand member are avoided. Y

9. The combination of a typewriter including a type-bar action, aconstantly reciprocating pivotal bar, a pivotally movable memberconnected with said type-bar action, a device whereby said member isnormally maintained out ot the path of said bar, and automatic means foractuating said device in a manner to permit said member to move into thepath of Isaid bar whereby said type-bar action is automaticallyoperated; said bar and member, during the period of their engagement,having pivotal movements about a common pivot whereby relative rubbingmovements between said bar and member are avoided.

l' l0. The combination of a typewriter including a type-bar action, aconstantly reciprocating pivotal bar, a pivotally movable memberconnected with said type-bar action, a. device whereby said member isnormally maintained out of the path ofsaid bar, means for actuating saiddevice in a manner to permit said member to move into the path of saidbar whereby said type-bar action is operated, said bar and member,during the period of their engagement, having pivotal movements about acommon pivot whereby relative rubbing movements between said bar andmember are avoided, and a traveling perforated sheet controlling theoperation of said actuating means.

11.' The combination of a typewriter including a type-bar action, aconstantly reciprocating pivoted bar, a pivotally movable memberconnected with said type-bar action, a device whereby said member isnormally maintained out of the path of said bar, electrically operatedmeans for actuating said device' in a manner to permit said member tomove into the path of said bar whereby said type-bar action isautomatically operated, said bar and member, during the period of theirengagement, having pivotal movements about a common pivot wherebyrelatively rubbing movements are avoided, and a traveling perforatedsheet controlling the operation of said electrically operated means.

l2. The combination ot' a typewriter, electrically actuated means forautomatically actuating the operating mechanism thereof, a drum inelectrical circuit with said means, a perforated sheet traveling oversaid drum, a member adapted to pass through the perforations of saidsheet into contact with said drum to close said circuit, whereby theoperation of said electrically actuated means is controlled, a worm-gearconnected with said drum, a worm-pinion in mesh with said worm-gear, atwo-part drinn shaft. a di iving shaft connected therewith, a clutchdevice for operatively connecting the parts of said drum-shaft tooperate said drum, and electrically actuated means controlled by saidsheet for automatically actuating said clutch device to disconnect theparts of said drum-shaft and stop the operation of said drum.

13. The combination of a typewriter including a series of type bars,type carried'by said bars, typewriter operating mechanism, a travellingcontrol device, and means responsive thereto for controlling in apredetermined manner the operation of said mechanism, an electricallyactuated device, and means controlled thereby for automatically causinga selectively varied impact force to be applied to selected type.

14. The combination of a typewriter, actuating mechanism for thetype-bars of said typewriter, a device for increasing the potentialimpact force of said type-bars, and means under the control of atravelling perforated control sheet whereby the operation of saidtype-bars by said actuating mechanism is controlled and whereby theoperation of said device is `controlled in 'a predetermined manner.

15. The combination of a'typewriter, actuating mechanism for thetype-bars of said typewriter, an electrically actuated device forincreasingr the potential impact force of said type-bars, and meansunder the control of a travelling perforated control sheet whereby theoperation of said type-bars by said actuating mechanism is controlledand whereby the operation of said device is controlled in ajn'edetern'iined manner.

16. The combination of a typewriter, actuating mechanism for thetype-bars thereof, a shift member for bringing about the printing ofupper ease characters, shift actuating means for operating said shiftmember` impact controlling means for increasing the potential impactforce of said type-bars, and means under the control of a travellingperforated control sheet whereby the operation of said shift member iscontrolled, and whereby the adjustment' of said impact controlling meansto vary the impact force of said typebars is effected coincidentallywith the operation of said shift member.

17. The combination of a typewriter. a pivotally reciprocating bar foroperating the type-bars of said typewriter, mechanism for reciprocatingsaid bar,` impact controlling means for increasing the potential impactforce of said type-bars, and means under the control of a travelling'perforated control sheet whereby the operation of said type-bars by saidreciprocating bar is controlled and whereby the operation of said impactcontrolling means is controlled in a predetermined manner.

18. The combination of a typewriter, a pivotally reciprocating bar foroperating the type-bars of said typewriter, an operating member foractuating said bar, means for adjusting said operating member relativelyto the pivot of said reciprocating bar-during the operation of thetypewriter to vary the potential impact force of the type-bars thereof,and means under the control of a travelling, perforated control sheetwhereby the operation of said type-bars by said reciprocating bar iscontrolled, and whereby the operation of said means is controlled in apredetermined manner.

19. The combination of a typewriter, mechanism including a pivotallyreciprocating bar .for automatically operating the type bars of saidtypewiter, an operating member for actuating said bar, a shift memberfor bringing about the printing of upper case characters, means foroperating the same, and a connection from said shift member to saidoperating member whereby the latter is adj usted toward the pivot ofsaid reciprocating bar to increase t-he impact force of the ty e bars ofsaid typewriter coincidentally with the operation of said shift member.

20. The combination of a typewriter, mechanism including a pivotallyreci rocating bar for automatically operating tietype bars of saidtypewriter, an operating meniber for actuating said bar, a shift leverfor bringing about the printing of upper case characters, a cam foroperating the same, a shift actuating member connected with said shiftlever and being normally outside of the operative path of said cam, anarmature operatively connected with said shift actuating member, anelectromagnet controlling said armature, and an electric circuitincluding said eleetromagnet and arranged to be closed whereby theelectromagnet is energized and the armature is actuated to adjust theshift actuating member into the path of said cam and thereby operatesaid shift lever and at the same time adjust the operating member towardthe pivot of said reciprocating bar to increase the impact force of thetype-bars of the typewriter.

21. The combination of a typewriter including type-bars, memberspivotally and slidably mounted and each connected with a type-bar, apivotally reciprocating bar common to all of said members, trigger rodsfor normally maintaining said members out of the path of said bar,armatures connected with said trigger rods, electromagnets in operativerelation to said armatures, and a travelingl perforated sheet wherebythe electrical energization of said armatures is controlled to operatesaid trigger rods and selectively release said members, whereby thelatter are shifted into the path of said bar and said typewriter isautomatically operated 1n a predetermined manner. I

22. The combination of a typewriter inslidably mounted and eachconnected with a type-bar, a pivotally reciprocating bar common to allof said members, trigger rods for normall maintaining said members outof the pat of said bar,farmatures connected with said trigger rods,electroinagnets located in banks in operative relation to saidrarmatures, the electromagnets in one bank being staggered with respectto the electromagncts in an adjacent bank, a traveling perforated sheet,and members in electrical circuit with said electromagnets and arranged,by passing through the perforations of said sheet, to bring about anelectrical energization of said electromagnets and a consequentoperation of said trigger rods to selectively release said members,whereby the latter are shifted into the path of said bar and saidtypewriter is automatically operated in a predetermined manner.

23. rIhe combination of a typewriter including a type-bar action, aconstantly reciprocating bar, a member connected with saidtype-bar-action, a trigger rod whereby saidmember is normall maintainedout of the path of said bar an means for tripping said trigger rod topermit said member to move into the path of said bar whereby saidtypebar action is operated thereby, said member, subsequently to itsrelease, having a movement sufficient to prevent re-engagement with saidtrigger rod until after the aforesaid operatitn of the type-bar actionhas been comlete P 24. The combination of a typewriter including atype-bar action, a constantly reciprocating bar, a member connected withsaid type-bar action, a trigger rod whereby said member is normallymaintained out of the path of said bar and automatic means for trippingsaid trigger rod to permit said member to move into the path of said barwhereby said type-bar action is automatically operated, said member,subsequently to its release, having a movement lsuiiicient to preventre-engagement with said trigger rod until after the aforesaid operationof the type-bar action has been completed.

. 25. The combination of a typewriter including a type-bar action, aconstantly recipe?,-y rocating bar, a member connected with saidtype-bar action, a .trigger rod whereby said member is normallymaintained out of the path of said bar, means for tripping said triggerrod to permit said member to move into the path of said bar whereby saidtypebarlaction is operated," said member, subsequently to its releasehaving a movement suiiicient to prevent re-engagement with said triggerrod until after the aforesaid operation of the type-bar action has beencompleted and a traveling perforated sheet controlling the operation ofsaid tripping means.

26. The combination of a typewriter including a type-bar action, amovable device constantly movable to a periodically recurrent impactdelivering position, and. normally ineffective upon said type-baraction, elecimmers trically actuated means whereby operative connectionand disconnection between said type-bar action and movable device isautomatically controlled, a travelling perforated sheet whereby theoperation of said electrically actuated means is automaticallycontrolled to automatically operate said typewriter and a circuit makerand breaker whereby the circuit in which said electrically actuatedmeans is located is broken and closed at least once for the distancerepresented by a given perforation of said sheet.

27. The combination of a typewriter including a type-bar action, amovable device constantly movable to aperiodically re-current impactdelivering position and normally ineffective upon said type-bar action,electrically actuated means whereby operative connection anddisconnection between said typebar action and movable device isautomatically controlled, an electrical circuit including saidelectrically actuated means,.a drum in said circuit, a contact member insaid circuit and arranged, by engagement with said drum, to close saidcircuit, a travelling sheet passing over said drum and normallymaintaining said contact member out of engagement with said drum, saidsheet having perforations adapted to be brought into registry with saidContact member to enable it to engage lsaid drum and al circuit makerand breaker in said electrical circuit whereby the latter is broken assaid contact member enters and leaves a given perforation and closedwhen said contact member is at an intermediate portion of saidperforation.

28. The combination of a typewriter,4

nism and for'bringing about the operation of y said shifting means andcooperating means.

29. The combination of a typewriter including a series of type-bars andtype-bar operators, a constantly moving actuator,

electrically actuated devices for normally;

maintaining said type-bar operators in inoperative positions, saiddevices being capable of being tripped for selectively coupling anduncoupling said type-bar operators with and from said actuator, atravelling device for controlling, in a perdetermined manner, theoperation of said electrically actuated devices, means whereby saidtravelling device is stopped automatically at predetermined points, andelectrically actuated means to start said travelling device.

30. The combination of a typewriter including a series of type-bars andtj, ipe-bar operators, a power-driver, a constantly moving actuatorpropelled by the power-driver, electrically actuated devices forselectively coupling and uncoupling said type-bar operators with andfrom said actuator, a travelling control device normally connected withsaid power-driver and means responsive to the travelling device forcontrolling, in a predetermined manner the circuits in which saidelectrically actuated devices are located, means whereby said travellingdevice is stopped automatically at predetermined positions, and means tostart said travelling device.

31. The combination of a typewriter including va series of type-bars andtype-bar operators, a power-driver, a constantly moving actuatorpropelled by the power-driver, electrically actuated devices forselectively coupling and uncoupling said type-bar o erators with andfrom said actuator, a trave ling device normally connected with saidpowerdriver for controlling, in a predetermined manner, the operation ofsaid electrically operated device, means whereby said travelling deviceis stopped automatically at predetermined positions, and a circuitbreaker whereby the circuit in which said electrically actuated devicesare located, is closed and opened at least once with each stroke of atype-bar.

32. The combination of a typewriter including a series of type-bars andtype-bar operators, 'a power-driver, an actuator common to all of saidtype-bar operators propelled b said power-driver, electrically actuatedevices including an electro-magnet in operative relation to eachtype-bar operator for selectively coupling and uncoupling said type-baroperators with and from said actuator, a travellingI device normallyconnected with said power-driver for controlling, in a predeterminedmanner, the operation of said electrically operated devices, meanswhereby said travelling device is stopped automatically at predeterminedpositions, and means to start said travelling device.

33. The combination of a ,typewriter including a series of type-bars andtype-,bar operators, a power-driver, an actuator common to all of saidtype-bar operators propelled by said power-driver, electrically actuateddevices, including an electro-magnet, in operative relation to eachtype-bar operator for selectively coupling and uncoupling said type-baroperators with and from said actuator, a travelling device normallyconnected with said power-driver for controlling, in a predeterminedmanner, the operation of said electrically operated devices, and aseries of contact keys for selectively closing and opening theelectrical circuits in which said electrically actuated devices arelocated.

34. The combination of a typewriter including a series of type-bars andtype-bar operators, a power-driver, an actuator common to all of saidtype-bar operators propelled by said power-driver, electrically actuateddevices including an electro-magnet in operative relation to eachtype-bar operator for selectively couplingV and uncouplin said type-baroperators with and from sai actuator,.a travelling perforated sheet forcontrolling, in a predetermined manner, the operation of saidelectrically actuated devices, and a circuit maker and breaker wherebythe circuit in which said electrically actuated devices are located isclosed and broken at least once for the distance represented by a givenperforation of said sheet.

35. The combination of a typewriter including a series of type-bars andtype-bar operators, a power-driver, a constantly moving actuatorpropelled by the power-driver, electrically actuated devices forselectively coupling and uncoupling said type-bar operators with andfrom said actuator, a travelling device normally vconnected with saidpower-driver for controlling, in a predetermined mauner, the operationof said electrically .operated devices, and means for disconnecting andre-connecting said travelling device from and with said powerdriver.

36. The combination of a t pewriter including a series of type-bars andItype-bar 0perators, a power-driver, a constantly moving actuatorpropelled by the power-driver, electrically actuated devices fornormally maintaining said type-bar operators in inoperative positions,said devices being capable of beingl tripped for selectively couplin anduncoup ing said type-bar operators witg and from said actuator, atravelling device normally connected with said power-driverforcontrolling, in a predetermined manner,

devices, and means for disconnecting and reconnecting said travellingdevice from and with said power-driver.

In testimony whereof I have hereunto set my hand.

PAUL voN BOECKMANN.

the operation of said electrically operated

